http://www.perlmonks.org?node_id=408472


in reply to Re: Near-free function currying in Perl
in thread Near-free function currying in Perl

package AutoCurry; require v5.6.1; use Attribute::Handlers::Prospective; sub UNIVERSAL::curry : ATTR(CODE,RAWDATA) { my ($package, $symbol, $referent, $attr, $data, $phase) = @_; my $num = () = $data =~ /(\$)/g; *{"$package".'::'.*{$symbol}{NAME}} = sub { if (@_ < $num) { my @x = @_; return sub { $referent->(@x, @_ ) }; } $referent->(@_); }; } 1; __END__ ############# demo.pl ############# #!perl use strict; use warnings; use AutoCurry; sub foo : curry($$$) { print "Hello @_\n"; }; foo( 'a', 'b', 'c' ); my $ref = foo('d','e'); $ref->('f'); $ref->('g');

Obviously, improvements can be made, but I think this does what is desired. There is a slight performance penalty, but it's not bad at all.

Being right, does not endow the right to be rude; politeness costs nothing.
Being unknowing, is not the same as being stupid.
Expressing a contrary opinion, whether to the individual or the group, is more often a sign of deeper thought than of cantankerous belligerence.
Do not mistake your goals as the only goals; your opinion as the only opinion; your confidence as correctness. Saying you know better is not the same as explaining you know better.